test: Remove unused options and variables, correct comments

test/functional/test_framework/util.py

@@ -459,7 +459,6 @@ def write_config(config_path, *, n, chain, extra_config="", disable_autoconnect=
         f.write("printtoconsole=0\n")
         f.write("natpmp=0\n")
         f.write("shrinkdebugfile=0\n")
-        f.write("deprecatedrpc=create_bdb\n")  # Required to run the tests
         # To improve SQLite wallet performance so that the tests don't timeout, use -unsafesqlitesync
         f.write("unsafesqlitesync=1\n")
         if disable_autoconnect: